Patent US1920391A successfully refreshed from Google Patents.
US1920391A
Expired / Lapsed
US
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Water bicycle
Assignee: Individual
•
Filing: 1932-09-07
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Granted: 1933-08-01
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Expires: 1952-09-07
Abstract
No abstract record available.
Inventors
- 👤 Ernest C L Herwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:11
CPC Classifications
B; B63; B63H; B63H16/00; B63H16/08; B63H16/12; B63B; B63B34/00; B63B34/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-07-31 | 1937-01-30 | 1937-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-31 | 1941-01-30 | 1941-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-31 | 1945-01-30 | 1945-08-01 | $7700.00 | Window Closed / Lapsed |